Server response and wordpress caching plugins?

Question

caching

Good day. The site is on Wordpress, I use Woocommerce and a number of other plugins, including for optimization, the server response always takes more than a second. When all plugins are disabled, the server responds in 250ms. As soon as I install caching plugins (Comet cache, breeze) and enable all other plugins - a miracle. The server response drops to ~130ms. Is it even possible to reduce the server response to ~130ms without using caching plugins? Since I heard that they are not needed for small projects.
And another question immediately follows. There is a basket counter, which works crookedly due to caching. What to read and how is the easiest way to fix (remove is not an option :))?
Thanks a lot, everyone.

Answer 1

Redesign the shopping cart to work entirely on the client, without requests to the server.
Useful links
https://developer.mozilla.org/en-US/docs/Web/API/B...
https://github.com/RubaXa/wormhole
https://github.com/wingify/across-tabs
https://github.com/studentIvan/dueljs
https://github.com/Sombressoul/__SE__

Answer 2

perhaps if you do not cache js, everything will work adequately